company blog about ON NCV2333DR2G High Precision Zero-Drift 30µV Offset Operational Amplifier

Shenzhen Mingjiada Electronics Co., Ltd. supplies and recycles the ON NCV2333DR2G high-precision, zero-drift, 30 µV offset operational amplifier.

The NCV2333DR2G is an automotive-grade, dual-channel, zero-drift, auto-zero operational amplifier belonging to the NCS333 family of precision op-amps. Based on an advanced auto-zero, zero-drift architecture, it achieves a maximum input offset voltage of 30 µV, effectively resolving the challenges of temperature and time drift associated with traditional operational amplifiers. Designed for low-voltage, high-precision, low-signal-level acquisition applications, it is certified to the AEC-Q100 automotive electronics standard and meets the requirements of industrial control, automotive electronics and portable precision measurement applications.

I. Key Product Features of the NCV2333DR2G

Zero-Drift Precision Specifications

Maximum input offset voltage (Vos): 30 µV (typical 6 µV)

Extremely low temperature drift of offset voltage: up to 0.07 µV/°C, suppressing zero-point drift across a wide temperature range

Typical input bias current of 60 pA and high input impedance, suitable for high-impedance sensors

Low-voltage, wide-supply-voltage design

Single-supply operating range: 1.8 V to 5.5 V, compatible with lithium-ion batteries and mainstream 3.3 V/5 V systems

Typical single-channel quiescent current: 17 µA; low overall power consumption in dual-channel configuration, suitable for battery-powered devices

Electrical Performance Parameters

Dual-channel independent operational amplifiers

Gain-bandwidth product (GBW): 270 kHz

Slew rate: 0.15 V/µs

Rail-to-rail input / rail-to-rail output (RRIO), fully utilising the power supply’s dynamic range

Single-channel output drive current: 11 mA

Common-Mode Rejection Ratio (CMRR): typically 123 dB, offering excellent common-mode interference immunity

Environmental and Reliability Specifications (Key for Automotive Applications)

Operating temperature range: –40 °C to +125 °C

II. Analysis of the Technical Advantages of the NCV2333DR2G

The zero point of traditional general-purpose operational amplifiers drifts continuously with temperature and operating time, which can easily lead to measurement errors when amplifying weak signals. The NCV2333DR2G employs an automatic zero-drift topology that continuously and dynamically corrects the offset voltage:

Long-term stability eliminates the need for external zero-adjustment circuits, reducing the number of peripheral components

Low temperature drift characteristics are suitable for conditioning millivolt-level small signals from devices such as strain gauges, thermocouples and pressure sensors

Track-to-track input supports the acquisition of weak signals close to the power supply rails, with no input dead zone

Dual-channel integrated design enables amplification of two signal channels on a single chip, saving PCB layout space

III. Typical Application Scenarios for the NCV2333DR2G

Automotive Electronics (Core Applications)

On-board temperature detection, in-vehicle pressure sensing, low-voltage current sampling for Battery Management Systems (BMS), and signal conditioning for on-board load cell sensors

Industrial Measurement and Control

Load cells, strain gauges, thermocouple temperature measurement modules, 4–20 mA front-end signal amplification, low-voltage active filters, industrial weak current detection

Portable Precision Equipment

Handheld measuring instruments, portable medical monitoring devices, battery-powered data acquisition terminals

Extended Applications

High-precision sensing modules for smart homes, Internet of Things (IoT) transmitter signal chains

IV. Summary of the NCV2333DR2G

The NCV2333DR2G, a dual-channel zero-drift operational amplifier from ON Semiconductor, features a maximum offset voltage of 30 µV, ultra-low temperature drift, a low-voltage supply range of 1.8 V to 5.5 V, and rail-to-rail input and output capabilities. AEC-Q100 automotive-grade certified, in an SOIC-8 package. Suitable for automotive sensing, industrial bridge-type data acquisition, and battery-powered precision measurement circuits for conditioning weak signals.